The below mentioned article provides biology notes on Phylum Hemichordata. (Gk. hemi- half, chordate- notochord) Due to some similarities with chordates, some workers considered Hemichordata as a subphylum under phylum chordata. But, on grounds of its general organization, recent scientists, like Vander Horst (1939), Dawyd off (1948), Marcus (1958) and Hyman (1959), have given it […]
Phylum Hemichordata (With Diagram) | Animal Kingdom
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Difference between Stomochord and Notochord | Balanoglossus
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The upcoming discussion will update you about the difference between stomochord and notochord. Difference # Stomochord: 1. The stomochord arises as an out pocketing from the roof of the embryonic gut, anterior to the pharynx. 2. Endodermal derivative. 3. It has a narrow lumen, opening into the pharynx. 4. The wall of the lumen is […]
Phylum Hemichordata: Meaning and Classification
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In this article we will discuss about the meaning and classification of phylum hemichordata. Meaning of Phylum Hemichordata: The animals with notochord constitute the Phylum Chordata. It has a major subdivision, called the Vertebrata or Craniata for possession of vertebral column or cranium. The rest of chordates, namely Hemichordata, Urochordata and Cephalochordata are collectively called […]
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